What is the y-intercept of a line whose equation is y = -3x - 4

What is the slope of the line that contains the points (-2,1) and (0,-3)

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Iknow the answer but the calculator doesn't seem to give the right one